Amount of ZINC in different Oils ???

[AMX69PHATTY]

Found a spec sheet for Valvoline VR-1 Racing Oil.
For Zinc / Phosphorus it shows 0.130/0.120
Does not indicate units for these figures, like grams per liter.

Looked, but could not find same info for Rotella-T

May I ask the Zinc / Phosphorus content of BullTear AMC Oil ?

This oil thing is pretty agravating.

Rotella-T, STP, EOS, VR-1, BT AMC Oil ...... what to do ?

[jeepsr4ever]

1.3% for AMC-HD, the rest from online sources have .12 or less % of zinc phosphates. Why guys are using diesel oil is beyond me.



Unless I am wrong sure looks like up to 10 times the zinc found in diesel oils.

Check here for popular brand mixes
http://www.micapeak.com/info/oiled.html

[73hornut]

All the zinc in the world won't help, if your still running the filter bypass. Might as well not even clean the block.

[76-cj7]

So.....according to them charts......Kendall GT-1 has a .16 zinc percentage.....which is the highest except for Valvoline race which is .20......At auto doom Valvoline goes for $3.09 a qt. and Kendall goes for $2.39 or something low like that. I've got the Kendall 20w-50 in my jeep right now, is that a good choice??

[BREK]

So.....according to them charts......Kendall GT-1 has a .16 zinc percentage.....which is the highest except for Valvoline race which is .20......At auto doom Valvoline goes for $3.09 a qt. and Kendall goes for $2.39 or something low like that. I've got the Kendall 20w-50 in my jeep right now, is that a good choice??

My understanding is that when the current supply of kendall is gone that's it. Bradpenn is the company that bought out the kendall brand.

[76-cj7]

Well hell BREK....................at the Auto Zone i work at we have cases of the stuff in the back and can't give it away! It's a great oil I.M.O. at an awesome price!

[BREK]

Well hell BREK....................at the Auto Zone i work at we have cases of the stuff in the back and can't give it away! It's a great oil I.M.O. at an awesome price!

I could be wrong? From what I hear kendall won't be available much longer atleast in MN.

[76-cj7]

Well from the way i understand it............Auto Zone buys in large quanities.........which explains constant product replacement and removal, so when one thing sells quickly its usually replaced by another brand of the same part............Raybestos brakes for instance........our store got 2 pallets full of them and once we sell out of them they are done for good, but we will continue to honor the warrenty, but the replacement part will be of another brand. So i figure it goes the same for Kendall oils.....once we sell our stock it prolly will be gone for good, but until then im going to run Kendall in my motors But im in Ohio......so it might be a whole different ball game for you guys.....

[rollbar]

OK so I use the Valvoline 10W30 (Red for higher mileage motors) in both my Jeeps, is this bad. What is w/all this Zinc & stuff anyway seeing that I'm not an oil guy. Isn't most oil, oil, or do we all need the Bull Tear brand or ? What do you look for in an oil off the shelf as far as ingredients etc.

[AMX69PHATTY]

Word is with a new rebuilt motor with a new flat tappet cam,
hydraulic or solid lifters, there needs to be ZINC in the oil
so the cam and lifters break-in right without lobe failures.
New motors with roller cams do not need the zinc in the oil
and the EPA has had them remove the zinc / phosphorus
from the oils cause it can ruin catalytic converter function.
Which is fine for newer motors, but aint so good for old ones
that still use flat tappet cams, at least for cam break-in.
Guess having zinc don't matter once cam is broke in.